High-Strength Self-Consolidating Concrete Girders Subjected To Elevated Compressive Fiber Stresses

There are limited measurements documented in the literature related to long-term prestress losses in self consolidated concrete (SCC) members. Recorded test data have shown variations in mechanical property behavior of SCC compared to conventional high strength concrete (HSC) mixtures in the 8-12 ksi range. Over the past year, precast manufacturers such as Coreslab Structures, Inc., in Marshall, MO have experienced inconsistencies in camber behavior with SCC which may be attributed to mechanical property variations, but variation in stress may also be a contributing factor. Additionally, increasing the allowable fiber stress limit is desired for full utilization of materials and members, as long as structural performance is maintained. Furthermore, accurate prediction of time-dependant prestress losses is essential for determination of the effective prestress force, which affects serviceability prediction and structural performance. Further investigation is required.

• Record URL:
  http://utc.mst.edu/documents/R209_CR.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/16815
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/34363
• Supplemental Notes:
  • This research was supported by a grant from the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  Center for Transportation Infrastructure and Safety

  University Missouri - Rolla, Civil Engineering - UMR
  325 Butler-Carlton Hall
  Rolla, MO  United States  65409

  Research and Innovative Technology Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Myers, John J
  • Brewe, Jared E
• Publication Date: 2009-8

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Figures; References; Tables;
• Pagination: 70p

Subject/Index Terms

• TRT Terms: Girders; High strength concrete; Mechanical properties; Self compacting concrete; Stresses
• Uncontrolled Terms: Compressive stresses; Prestress losses; Structural performance
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01139403
• Record Type: Publication
• Report/Paper Numbers: NUTC R209, Report No. 00018532
• Contract Numbers: DTRT06-G-0014 (Grant)
• Files: UTC, NTL, TRIS, USDOT
• Created Date: Sep 1 2009 8:29AM